Journal of Threatened Taxa | www.threatenedtaxa.org | 26 August
2019 | 11(10): 14381–14384
Two new
locations for the Vulnerable Black-necked Crane Grus nigricollis
(Przhevalsky, 1876) (Aves: Gruiformes:
Gruidae) in Arunachal Pradesh, India
Rohan Krish
Menzies 1, Megha Rao 2 & Abhinav Kumar 3
1,2 Nature
Conservation Foundation, 1311, “Amritha”, 12th
Main, Vijayanagar 1st Stage, Mysuru, Karnataka 570017, India.
3 Divisional
Forest Officer, Along Forest Division, West Siang District, Arunachal Pradesh
791001, India.
1 rohanmenzies@ncf-india.org
(corresponding author), 2 megha@ncf-india.org, 3 abhinavkumar623@gmail.com
doi: https://doi.org/10.11609/jott.5337.11.10.14381-14384
|
ZooBank: urn:lsid:zoobank.org:pub:E6E1F53A-7BA3-4BEE-BE0A-2200FED2ADDC
Editor: K.S. Gopi Sundar, Nature
Conservation Foundation, Mysuru, India. Date
of publication: 26 August 2019 (online & print)
Manuscript details: #5337 | Received 16 August 2019
| Finally accepted 20 August 2019
Citation: Menzies, R.K., M. Rao & A.
Kumar (2019). Two new locations for the Vulnerable Black-necked
Crane Grus nigricollis (Przhevalsky,
1876) (Aves: Gruiformes: Gruidae)
in Arunachal Pradesh, India. Journal of Threatened Taxa 11(10): 14381–14384. https://doi.org/10.11609/jott.5337.11.10.14381-14384
Copyright: © Menzies et al 2019. Creative Commons Attribution
4.0 International License. JoTT allows unrestricted use, reproduction, and
distribution of this article in any medium by adequate credit to the author(s)
and the source of publication.
Funding: Wildlife Conservation
Trust - India; Inlaks Ravi Sankaran
Foundation; Rufford Small Grant for
Nature Conservation.
Competing interests: The authors declare no competing
interests.
Acknowledgements: We thank
Rohit Naniwadekar for his guidance and support during
this project and for providing comments on a previous version of this
manuscript. We thank R. Raghunath for
help with the map. We are grateful to Dorjee Khandu Thungon
for providing us with information and photographs from Shergaon. We thank the Garung
Thuk Organisation and the local community at Shergaon for their efforts in creating conservation
awareness and protecting the Black-necked Cranes in Shergaon. We appreciate Mr. P.D. Sona
for his efforts in trying to keep the juvenile crane alive in Mechuka and for alerting the authorities. We are grateful to Ms. Swetika
Sachan for her efforts in reducing the levels
of hunting in Mechuka. We thank the Arunachal Pradesh Forest
Department for permitting us to work in these two locations. Finally, we thank the Wildlife Conservation
Trust – India, the Ravi Sankaran Foundation, and the Rufford
Small Grant for Nature Conservation for funding our work.
Black-necked Cranes Grus nigricollis
are a globally Vulnerable species which breed across the Qinghai-Tibetan
Plateau to the Ladakh region of northern India and
winter south in Bhutan and parts of western Arunachal Pradesh, India (Birdlife
International 2017). It is estimated
that there are around 10,000 individuals globally with a decreasing trend in
populations (Birdlife International 2017).
In India, this large bird has been previously sighted on numerous
occasions in the Ladakh region in the western
Himalaya and from three main valleys in the eastern Himalaya—the Zemithang Valley, Sangti Valley,
and the Chug Valley, Arunachal Pradesh (Mazumdar & Samal
2012; Chandan et al. 2014; Mize et al. 2018).
Historically, the Black-necked Crane was sighted in the Apatani Valley, in the Subansiri
region of central Arunachal Pradesh in 1979 (Chandan et al. 2014). It is thought that the population wintering
in Subansiri was hunted out by the local
communities. The species has also been
reported from the high-altitude region of Sikkim, India, which is also part of
the eastern Himalaya belt (Acharya & Vijayan 2010; Chandan et al. 2014) and
from two sites in the Namdapha Tiger Reserve, the
easternmost sightings for India (Srinivasan et al. 2010). Here we describe two new locations in
Arunachal Pradesh for the Vulnerable Black-necked Crane: one being a potential
wintering site and the other a stopover site on a possible flyway (Fig. 1).
Mechuka (1,829m; 28.58⁰N, 94.12⁰E) is located in the Shi Yomi
District of Arunachal Pradesh and is nestled in between snow-capped mountains
on three sides. Mechuka
is about 28km (aerial distance) from the Chinese border and is located to the
south of the Tibetan Plateau. The Yargyap Chu River flows through the town and there are
large open spaces consisting of grassland, high altitude marshland and
cultivated land which are well-suited for Black-necked Cranes. On 23 December 2017, an injured juvenile
Black-necked Crane landed on the property of a resident in Mechuka
Town. The bird had suffered a bullet
wound to its left leg as a result of a hunting attempt in or around the
town. Presumably, the young bird’s
injury rendered it too weak since it needed to walk and feed (Image 1). The town lacks veterinary facilities, and
although the family tried to keep the bird alive until help arrived from the
closest city, it proved to be too late.
The young crane succumbed to its injuries on the morning of 27 December
2017. Aware of the status of the Black-necked
Crane, the forest department authorities in the district headquarters of Along,
who were alerted by the locals of Mechuka, proceeded
to conduct a reconnaissance survey of the Yargyap Chu
River for the crane and other migratory birds. This survey resulted in locating
nine potential stops for migratory birds along the river based on habitat
suitability.
The town of Shergaon
(2,000m; 27.10⁰N, 92.27⁰E) is situated in the West Kameng
District of Arunachal Pradesh which shares a border with Bhutan. One of the two well-known stopovers in
Arunachal Pradesh, the Sangti Valley, is also located
in this region, about 30km (aerial distance) away from Shergaon. Similar to Mechuka,
this high-altitude site possesses several rivers and streams along with open
habitat mixed with farmland. The
residents of Shergaon are fascinated with birds and
have, unique to Arunachal Pradesh, imposed a ban on bird hunting for the past
20 years. Shergaon
predominantly consists of Buddhist Sherdukpen tribe,
who look forward to the landing of the Black-necked Cranes once a year;
however, in the last five years, the birds have only landed twice (Garung Thuk, pers. comm.). The birds reportedly stay for about a week
usually at the end of December or the beginning of January (Image 2). Although the birds don’t visit every year,
they are welcomed and upon arrival, the village council informs the residents
of Shergaon not to harm the Black-necked Cranes and
reminds them that they will be punished if they do so. The cranes that stopover at Shergaon are usually lone birds or sometimes in pairs. It is possible that the Black-necked Cranes
traveling south from China stopover at the Zemithang
Valley, the Sangti Valley (only 30km away), and
finally Shergaon before entering Bhutan. Due to the short duration of their stopover,
it is less likely that the birds wintering in Bhutan from the Shenzha region in China (Liu et al. 2012) are spilling over
to eastern Arunachal Pradesh.
While both Mechuka and Shergaon appear to have similar habitats, well-suited for
the Black-necked Crane, there are differing threats that might affect this
threatened species in each location. In Mechuka, there has been an increase in tourism and
subsequent development to accommodate tourists.
The government aims to develop Mechuka as a
hub for adventure tourism, which comes with its own share of problems.
Commercial aviation services will soon commence in Mechuka
and this could potentially result in an increased disturbance to the
birds. Black-necked Cranes are sensitive
to habitat alterations and it can cause behavioural changes in the birds (De-Jun
et al. 2011). Based on the incident from
Mechuka described here, hunting is likely to be a
significant threat to the wintering birds visiting here. Although, most of the local community members
are Buddhists belonging to the Memba tribe who revere
the Black-necked Crane, there are some residents from other tribes who still
hunt the species. This cultural
reverence of the Black-necked Crane also applies to the locals of Shergaon where the birds have the additional protection of
the hunting ban. Although the brief
stopover at Shergaon is made by only a few birds, the
high levels of grazing and pesticide use could pose a major threat at a local
scale (Birdlife International 2017). The
proposed dams upstream of the rivers in both locations, however, could
drastically alter the landscape downstream and hence influence the presence of
the Black-necked Crane. The Monpa Tribe of Tawang District
has long opposed the construction of dams on the Nyamjang
Chhu River which would displace a 3-km stretch of the
Black-necked Cranes wintering site (Lenin 2015). Due to the geographic position and the
presence of suitable habitat in Arunachal Pradesh for the Black-necked Crane to
winter, the state of Arunachal Pradesh can play a key role in the conservation
of this species. Rigorous surveys and monitoring at both locations, along with
educating the local communities about the importance of the species, would be
extremely useful for the rare Black-necked Cranes in India and also to help
understand the species from a global standpoint.
For figure & images –
click here
References
Acharya, B.K. & L. Vijayan
(2010). Status and distribution of
endemic and threatened birds of the eastern Himalaya in Sikkim, India. Journal
of Threatened Taxa 2(2): 685–689. https://doi.org/10.11609/JoTT.o2257.685-9
Birdlife International (2017). Grus nigricollis (amended
version of 2016 assessment). The IUCN Red List of Threatened Species 2017:
e.T22692162A110659467. Downloaded on 11 August 2019. https://doi.org/10.2305/IUCN.UK.2017-1.RLTS.T22692162A110659467.en
Chandan, P., A. Khan, J. Takpa & S.A. Hussain (2014). Status and distribution of Black-necked Crane (Grus
nigricollis) in India. Zoological Research
35(S1): 39–50.
De-Jun, K., Y. Xiao-Jun, L. Qiang, Z. Xing-Yao & Y. Jun-Xing (2011). Winter habitat selection by the Vulnerable
Black-necked Crane Grus nigricollis in Yunnan,
China: implications for determining effective conservation actions. Oryx
45(2): 258–264. https://doi.org/10.1017/S0030605310000888
Lenin, J. (2015). Indigenous tribe opposes hydropower projects in the Tawang basin. The Guardian. August 22.
Liu, Q., F. Li, P. Buzzard, F.
Qian, F. Zhang, J. Zhao, J. Yang & X. Yang (2012). Migration routes and new breeding areas of
Black-necked Cranes. The Wilson Journal of Ornithology 124(4): 704–712. https://doi.org/10.1676/1559-4491-124.4.704
Mazumdar, K. & P.K. Samal (2012).
Conservation, management and hunting of faunal resources among Monpas and Sherdukpens in
Arunachal Pradesh, eastern Himalaya, pp. 91–103. In: Ramakrishnan, P.S.,
K.G. Saxena, K.S. Rao & G. Sharma(eds.). Cultural Landscapes: The Basis
for Linking Biodiversity Conservation with the Sustainable Development.
UNESCO, New Delhi, India.
Mize, D., T. Tamir, T. Biju, J. Ngukir, A.T. Kimsing & R.
Tapa (2018). Review of Black-necked Crane Grus
nigricollis in Arunachal Pradesh, north-east
India, including a new wintering site. Birding Asia 30: 96–97.
Srinivasan, U., S. Dalvi, R. Naniwadekar,
M.O. Anand & A. Datta (2010). The birds of Namdapha
National Park and surrounding areas: recent significant records and a checklist
of the species. Forktail 26: 92–116.